S 024-065
(2)
Remove the sealant from around the periphery of the adapter plate and front spar (if sealant was applied).
S 864-006
(3)
Go into the fuel tank (AMM 28-11-00/201).
(4)
To get to the engine spar valve location, do these steps (View A):
S 014-029
NOTE: Refer to the table for the mid spar access doors.
____
(a)
NO. 2 AND 3 ENGINE SPAR VALVES; Go to the front spar through the access hole in the mid spar.
(b)
N0. 1 AND 4 ENGINE SPAR VALVES; Remove the applicable mid spar access door (AMM 28-11-25/401).
S 034-008
(5) Remove the bolts (7) and washers (8) (four locations) that attach the adapter (1) to the front spar.
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A
747-400
MAINTENANCE MANUAL
S 024-009
(6)
Move the adapter (1) away from the front spar to disengage the shaft from the valve body.
S 024-021
(7)
Remove the adapter shaft (1) through the opening in the front spar.
S 034-022
(8)
Discard the O-ring (6).
S 144-035
(9)
Remove all of the old sealant from the front spar around the periphery of the adapter plate (if sealant was applied).
TASK 28-22-09-404-010
3. Engine Spar Valve Adapter Installation (Fig. 401)
______________________________________
A. Equipment
(1)
Bonding Meter (SWPM 20-20-00) Approved for use in fuel vapor areas
B.
Consumable Materials
(1)
A00247 Sealant - Corrosion Protection, BMS 5-95
(2)
C00064 Coating - Alodine 600 Chemical conversion coating for aluminum or aluminum alloy, (MIL-C-5541).
(3)
C00307 Corrosion Resistant Finish - BMS 10-20 Type II
(4)
D00128 Petrolatum - Technical, VV-P-236
C.
Parts
~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Shaft - Adapter (Inbd) | 28-22-09 | 01 | 60 | | | | Shaft - Adapter (Outbd) | | | 10 | | | 6 | O-ring (Packing) | | | 75 | | | | | | | 25 | 2......…........…...................................…..........….....….........1
D. References
(1)
AIPC 28-22-09 Fig. 1
(2)
AMM 12-11-03/301, Fuel Servicing
(3)
AMM 27-81-00/201, Leading Edge Flap System
(4)
AMM 28-00-01/201, Adapter Shaft Alignment
(5)
AMM 28-11-00/201, Fuel Tanks
(6)
AMM 28-11-00/801, Fuel Tank Repair
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A
747-400
MAINTENANCE MANUAL
NO. 1 AND NO. 4
SPAR VALVE
SEE A FILLET SEAL 1
FRONT SPAR
2. INDEX PLATE
NO. 2 AND NO. 3
SPAR VALVE
SEE B ACTUATOR
1. ADAPTER PLATE
UP SEE C
1. ADAPTER
PLATE
SEE D
NO. 1 AND NO. 4 SPAR VALVE A
2. INDEX
PLATE
ACTUATOR
FRONT
SPAR
UP
FILLET SEAL 1
NO. 2 AND NO. 3 SPAR VALVE
B
APPLY A FILLET SEAL OF BMS 5-95 SEALANT TO THE EDGE OF THE ADAPTER PLATE
AND FRONT SPAR (ELECTRICAL BOND PROTECTIVE SEAL) (SWPM 20-20-00) ON AIRPLANES
WITHOUT PRIMER BETWEEN FRONT SPAR AND ADAPTER PLATE.
1
PREPARE THE FAYING SURFACES OF THE ADAPTER PLATE AND MATING SURFACE
OF THE FRONT SPAR FOR AN ELECTRICAL SURFACE BOND (SWPM 20-20-00) ON AIRPLANES
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